feat(modal): add rollout telemetry foundation

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/Admin/Schema/SchemaTools.php

@@ -18,6 +18,7 @@ class SchemaTools {
                 'health'         => SchemaToolsHealth::build(),
                 'backup'         => SchemaToolsBackup::build(),
                 'email-rollback' => SchemaToolsEmailRollback::build(),
+                'modal-rollout'  => SchemaToolsModalRollout::build(),
             ],
         ];
     }